C#

inheritance

public abstract class Animal
    {
        private String name;
        private int age;
        private String breed;
        private String furColor;

        public Animal(String name,int age,String breed,String furColor)
        {
            this.name = name;
            this.age = age;
            this.breed = breed;
            this.furColor = furColor;
        }

        public void setName(String name)
        {
            this.name = name;
        }

        public String getName()
        {
            return this.name;
        }

        public void setAge(int age)
        {
            this.age = age;
        }

        public int getAge()
        {
            return this.age;
        }

        public void setBreed(String breed)
        {
            this.breed = breed;
        }

        public String getBreed()
        {
            return this.breed;
        }

        public void setFurColor(String furColor)
        {
            this.furColor = furColor;
        }

        public String getFurColor()
        {
            return this.furColor;
        }

        public abstract void sound();

        public string ToStirng()
        {
            return ("Name: " + getName()
                    +"\n"
                    +"Age: " + getAge()
                    +"\n"
                    +"Breed: " + getBreed()
                    +"\n"
                    +"Fur Color: " + getFurColor());
        }
    }

<pre>public class Cat : Animal
    {
        private String favoriteToy;

        public Cat(String name,int age,String breed,String furColor,String favoriteToy):base(name,age,breed,furColor){
            this.favoriteToy = favoriteToy;

        }

        public void setFavoriteToy(String favoriteToy)
        {
            this.favoriteToy = favoriteToy;
                
        }

        public String getFavoriteToy()
        {
            return this.favoriteToy;
        }

        public override void sound()
        {
            Console.WriteLine( getName() + " is a beautiful cat, he is "  + getAge() + " and he likes to Meow."); 
        }

        public override string ToString() => (base.ToString() +
                    "\n"
                   + "Favorite Toy: " + getFavoriteToy());
    }

static void Main(string[] args)
        {
            Cat C = new Cat("Fluffy",4,"Tabby","Ginger","Mouse");
            Console.WriteLine(value: C.ToString());
            C.sound();
        }

administratively scalable

Third, a system can be administratively scalable, meaning that it can still be easy to manage even if it spans many independent administrative organizations